Fraud prevention shouldn't cost you conversions. Every 100ms of added latency at checkout drops conversion rates by 1%.
When building Sentinel, our core directive was speed. Legacy APIs like IPQS and MaxMind route all requests through central servers in the US or Europe, producing 200ms+ round trips for users in Asia or South America. For modern applications, that's unacceptable.
The Anycast Edge Architecture
We rewrote the rulebook by deploying our decision engine directly to the Edge. Using BGP Anycast routing, user telemetry is evaluated at the closest of our 250+ global POPs. A user in Singapore never touches a US server.
Rust at the Core
Our core assessment engine is written entirely in Rust, consuming less than 2MB of memory per instance. This allows us to load the entire ML model into L3 cache, eliminating disk I/O from the hot path entirely. The result: a global average response time of 38ms.